[Sherlock feels more alive now than he has in months, there's the thrill of the chase and an actual concrete thing that they can do to make things potentially better, it's amazing.

It carries him through the initial meeting with this particular anomaly and lets him ignore the creeping feeling under his skin.]

Good thinking, John, those exceptional vines may be able to be utilised as something like a lockpick. So, Flynn, what do you say?